package com.education.schedule.dynamic;

/**
 * Created by zhangjiawen on 2019/10/30.
 */

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;

/**
 * 获取Spring Bean的封装类
 * @author jerval
 */
public class SpringUtils  {

    /**
     * 上下文对象实例
     */
    private static ApplicationContext applicationContext;

    //@Autowired
    public static void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        SpringUtils.applicationContext = applicationContext;
    }

    /**
     * 获取applicationContext
     * @return
     */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    /**
     * 通过name获取 Bean.
     * @param name
     * @return
     */
    public static Object getBean(String name){
        return getApplicationContext().getBean(name);
    }

    /**
     * 通过class获取Bean.
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(Class<T> clazz){
        return getApplicationContext().getBean(clazz);
    }

    /**
     * 通过name,以及Clazz返回指定的Bean
     * @param name
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(String name,Class<T> clazz){
        return getApplicationContext().getBean(name, clazz);
    }


}